Thanks Alistair, and sorry for the initial lack of feedback. I have linked to the upstream bug report, which is 14 years old! Sounds like no one has shown interest in addressing it in all this time :/
** Summary changed: - Adding word to dictionary doesn't update subject + [upstream] Adding word to dictionary doesn't update subject ** Changed in: thunderbird (Ubuntu) Status: New => Confirmed ** Changed in: thunderbird (Ubuntu) Importance: Undecided => Low ** Bug watch added: Mozilla Bugzilla #433181 https://bugzilla.mozilla.org/show_bug.cgi?id=433181 ** Also affects: thunderbird via https://bugzilla.mozilla.org/show_bug.cgi?id=433181 Importance: Unknown Status: Unknown ** Tags added: upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1916586 Title: [upstream] Adding word to dictionary doesn't update subject To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1916586/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs